Experimental Investigation of Mechanical Property and Wear Behaviour of T6 Treated A356 Alloy with Minor Addition of Copper and Zinc

The present study examines the effect of trace additions copper (up to 1 wt.%) and zinc (0.5 as alloying elements on microstructure, hardness, wear behaviour T6 treated A356 (Al-7Si) alloy. Wear tests were conducted using a pin-on-disc tribometer under constant sliding speed 200 RPM, varying applied load (20–40 N), distance (0–3000 m) determine rate coefficient friction. results indicated minimum wt.% was required form Al2Cu intermetallic phase, resulting in finer grain structure improved hardness. However, role element not observed microstructure; changes may be combined whole. highest hardness 107 VHN (98% increase) achieved with addition during peak aging at 100 °C. Also, showed that adding alloy °C precipitation hardening (T6) treatment resistance by 150–182% reduced